273 rocker arm adjustment
I got the top hole of the rockers brazed, i used silicone bronze tig rod and tig brazed them, it went ok.
I ended up using the same method to plug the holes in the shafts, it went ok until i was machining the welds down smooth in the lathe when i realized the shafts are chromed and the lathe chipped a bunch of chrome off, ughhh....so then i had to fill that in with more silcone bronze, and switch to smoothing the welds down with a belt sander...eekkkk. Then i took it to the polish grinder and smoothed them out, i think it will be ok... i cant believe those are chromed...that was a PITA
RR what do you mean the shaft having 3 holes? i had one hole, now i have zero holes, and i need to drill two holes and add a banana groove on one of those holes at 6 o clock
i still need to update the procedure we have been formulating for drilling the rocker arms and shafts, but before i do that i am trying to get my push rods figured out, so i can get them here so i put this thing back together next weekend.
Rob, can you list the part number for the crane replacement adjusters and nuts???
Let's get all the info in one thread as many people like to run the stock 273 adjustable rockers on hydraulic cam small blocks...
Then maybe OE Push Rods can assign a part number and can make them available for everyone...
Do you know if this ever happened?
I have the comp 7709 push rod checker and i am having a heck of a time using it. When the checker is in the head you cant grab the lower half to adjust it. (its really hard to do in the car, since i am dealing the previous owners oversights)
The ones on the end are easy, because where the push rod checker goes through the head its thinner. also PITA you have to take the complete rocker shaft assembly each time because there is no way to get the push rod checker in there each time.
I have four measured so far with a average of 7.123" from end of ball to end of cup. The ones he had in there were 7.382" (sealed power RP-3159) ! its no wonder the cups were digging into the rocker arm.
The other thing that sucks with this setup is you cannot adjust the geometry of the rocker. These flat tipped rockers have a huge drag surface compared to a roller rocker. but i believe to change to that setup you have to have major machine work done to the heads.
